Since I have been at this school we have three headmasters .

自从我到这所学校以来已有过三位校长了。

A survey of 483 kindergarten headmasters in shenzhen shows that headmasters ' expectations on teachers ' qualities include their professional skills , strengths and degrees .

对深圳、珠海两市483所幼儿园的园长进行问卷调查发现，园长对教师素质的期望包括专业技能、特长、学历等多个方面。

I think they are stupid headmasters .

我觉得他们是些愚蠢的校长。

Since I 've been at this school , we have had three headmasters .

自从我到这所学校，我们已换了三个校长。

English is so important that headmasters of all universities pay attention to its teaching .

英语如此重要，所有大学的校长非常关注本校的英语教学。